class Run:
    def __init__(self):
        self.xiaoming=75
        self.xiaomei=45
    def run(self):
        self.xiaoming-=0.5
        self.xiaomei-=0.5
        print(f"跑完步后小明的体重{self.xiaoming},小美的体重{self.xiaomei}")
    def eat(self):
        self.xiaoming+=1
        self.xiaomei+=1
        print(f"吃东西后小明的体重{self.xiaoming},吃东西后小美的体重{self.xiaomei}")
after_run=Run()
after_run.run()